JPS5927163Y2 - folding table - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of a folding table in which a top plate and a shelf linked to the top plate can be locked or unlocked using a common locking means. To provide a folding table which can easily and reliably perform a folding operation with a light force, and which can improve assembly workability.

Another object of this invention is to provide a folding chiffle that allows the top plate to be folded to a neutral position where it is once stationary, so that the folding operation can be carried out safely without having to hold hands during the folding operation.

A preferred embodiment of this invention will be described below based on the drawings.

In the folding type one-sleeve table shown in FIG. 1, the upper end of the pedestal 1, which is planted toward the rear of the pair of left and right pedestals 2 having casters 53, is as shown in FIG. 3. Bracket bearings 4 whose tips protrude in front of them
is -C144.

A top plate support frame 5 is provided on the tip side of the bracket bearing 4.
The proximal end side of the shaft is pivotably supported on a shaft P1 so as to be vertically movable.

Therefore, the top plate support room 5 is mounted so that it can be freely rotated between a folded position along the front surface of the pedestal 1 in a substantially vertical position and an unfolded position in a horizontal position directly above the pedestal 2. It is configured.

A top plate 6 is integrally mounted on the cut-off top plate support frame 5 by screws or the like.

The top plate support frame 5 is held horizontally in the unfolded position by a bendable diagonal stay T provided astride between the top plate support frame 5 and the pillar 1.

As shown in FIGS. 3 and 4, the stay T consists of an upper stay member 7a whose inclined upper end is rotatably supported on an axis P2 near the tip of the top support frame 5, and a pedestal 1. It consists of a lower stay member 7b rotatably supported on a shaft P3 at a position spaced below the bracket shaft 4 near the top.

Both of these stem members ra and γb are each integrally formed with a square groove cross-section by a steel plate, and the groove width of one of the stem members, that is, the lower stem member 7b in the illustrated example, is the same as that of the upper stem member 1a. It should be set narrower than the groove width.

Then, the mutually connected end sides of both stem members 7a and 7b are fitted in an overlumped state with an appropriate length bent, and in this fitted state, both side walls of the distal end of the lower stem member γb are aligned with the upper stem member 1.
It is bendably connected to both side walls of b with pins P4P5 such as rivets.

Therefore, the stay γ having the above structure can be freely extended to a straight state and bent in the two-digit direction using the connecting pins P4, P between both stay members as a bending joint point.

The stay 1 is installed to straddle between the pedestal 1 and the top support frame 5 so that the groove faces downward when the stay 1 is extended and deployed.

For this reason, the stay γ is diagonally extended when the top board is deployed, and the inner surface of the earth wall of the upper stay member 7a and the outer surface of the earth wall of the lower stay member γb collide at their overramp portions. Thereby, the stopper function in the above-mentioned extended state is exhibited to hold the top support frame 5 and the top board 6 in the horizontally unfolded position.

Further, the stay T includes both stay members γa.

A coiled toggle spring 9 extending in the longitudinal direction of the stay extends between the grooves of the stays 1b.

This toggle spring 9 has its pin connecting portion F'4 within the stay γ when deployed, with respect to the locking pieces 8a and 8b which are cut and raised into the respective grooves of both stay members Ta and 1b.
The frame is stretched so that the maximum tension is reached at a position closer to the corner formed by the pedestal 1 and the top support frame 5 than P5.

Therefore, the toggle spring 9 has its spring axis centered at the pin connecting portion P4. When the stay 1 passes the center of each pin P5 toward the corner side, the stay 1 is urged in the direction of extension and development, and the pin connecting portion P4. P
5 in the opposite direction to the corner side, the stay T is urged in the folding direction.

The base end of the shelf 10 is rotatably supported on the base end pivot shaft P3 of the lower stay member γb.

A link member 11 is spanned between the tip P7 of the iron fence 10 and the pivot shaft P2 of the upper stem member la, and the link member 11 keeps the shelf 10 parallel to the top plate support frame 5 at all times. Maintained.

Also, as is clear from FIG. 5, the shelf side plates 12 and 12 on the shelf surface side
Each of the lever devices 13 is provided with a lever device 13 rotatably supported by a shaft P6.

The shaft P6 consists of a so-called transmission shaft which traverses the shelf 10 and connects and interlocks the lever device 13.13 on the shelf side plate 12.12;
12 and a shelf pipe 10a at a predetermined position horizontally suspended between them.

Lever devices 13, 13 are integrally fixed to the ends of the shafts P6 protruding from each shelf side plate 12, respectively.

The lever device 13 may have any configuration as long as the left and right sides make a so-called lever movement with the shaft P6 as a fulcrum, but in the case of this embodiment, the upper wall of the shaft connecting portion 14 having a U-shaped cross section, The lower wall extends in parallel with the opposite direction, the tip of the upper piece is curved downward to form a push-up piece 15, and the lower piece is used as a bundle piece 16.

The lever device 13 is installed on the shelf side plate 12 by arranging the push-up piece 15 from below to abut against the lower end of the lower stem member 1b, and fitting and welding the shaft P6 into the shaft connecting portion 14. .

Here, if the length or weight of the push-up piece 15 is set longer or heavier than the bundle piece 16, the lever device 13...
Since the handle piece 16 rotates by itself in a downward direction, when the table is unfolded, the push-up piece 16 rotates and is always in contact with the lower stem member γb, making it easier to operate the lever and requiring less force. You can do it.

Furthermore, it is preferable to provide the lever device 13 with a rotation angle regulating means 1γ, since this allows the table to be folded safely.

That is, when the stay 1 is bent all at once by the lever device 13, the biasing force of the toggle spring 9 is combined with the weight of the top plate, etc.
@, Since the top plate etc. are folded so violently, there is a risk of getting your hands caught when operating the lever.

Therefore, the rotation of the lever device 13 is restricted, and the bending angle of the stay I, which bends accordingly, is kept at a position where the toggle spring force acting in the table unfolding direction is released, and then the table can be folded manually. A rotation angle regulating means 1γ is employed.

In the illustrated example, the rotation angle regulating means 1γ is a bundle piece 1.
6 is extended, and a protrusion 17a is provided at a predetermined position on the shelf side plate 12, so that when the lever device 13 reaches a certain rotation angle, it collides with the protrusion 1γa and stops its movement. However, it goes without saying that any configuration may be used as long as it restricts the rotation of the lever device 13.

When folding the table having the above structure from the unfolded state, the handle piece 16 of the lever device 13 is pushed down and rotated to the abutment position of the protrusion 1γa.

Then, the lower stay member 1b is rotated by a predetermined angle about the axis P3 by the push-up piece 15 which is rotationally displaced in the opposite direction to the bundle piece 16.

Therefore, by bending the stay 1 using the connecting pins p and tp5 between the both side stay members 7a and 7b as the bending joint points, the center of the connecting pins P4 and P is aligned with the axis of the toggle spring 9 on the lower side. , release the biasing force in the direction of deployment and enter the neutral position.

In this state, the top plate 6 is stationary with a slight incline, so if you let go of the lever device 13 and manually rotate the top plate 6 in the folding direction, the top plate 6 and the top plate support frame will collapse. 5. Each of the shelves 10 is folded into a hanging position along the pedestal 1 by its own weight and the force of the toggle spring.

Note that since the rotation of the lever device 13 is linked to the lever device 13 that bends the opposing stay γ via the transmission shaft P6, the stays γ and γ on both sides can be bent by operating only one lever.

Further, when the hanging end portion of the top plate 6 is lifted from the folded state, the top plate support frame 5 rotates counterclockwise in the figure using the base end side shaft P1 as a fulcrum.

At this time, the stay γ follows the top support frame 5 and extends against the force of the toggle spring 9, and at the same time, the shelf 10 rotates via the link member 11 while maintaining the parallel state with the top support frame 5. do.

As a result, the top plate 6, the top plate support frame 5, and the shelf 10 become a cooperative body and are expanded to an almost horizontal position, so that the axis of the toggle spring 9 is aligned with the connecting pin p4t of the stay 1.
When the stay I passes above p5, the stay I is fully extended by the force of the toggle spring 9.

In the fully extended state of the stay γ, the axes of the connecting pins p4 and p5 between the stay members should cross downwardly the straight line connecting the axes of the pivot shafts P2 and P3 at both ends of the stay. It is set.

Therefore, the stay 1 is fully extended as described above, thereby holding the top plate 6, the top plate support frame 5, and the shelf 10 in the horizontally deployed position.

Furthermore, the folding table having the above configuration has a holding frame 18 for storing folding chairs installed on the back of the top plate as shown in FIGS. 6 to 8. A pair of brackets having leg pieces 18a that are integrally connected and extending in the same direction, and the tips of the leg pieces 18a are used as the base end of the holding frame and are fixed at opposing positions on the back surface of the top plate with screws, etc.) 19. The mounting structure is rotatably supported by a pin 20 or the like at 19.

It is preferable to arrange the bracket 19 so that the pin 20 is located on an extension of the axis P1.

The bracket 19 has a stopper piece 21 protruding from one end,
The holding frame 18 is restrained from rotating more than approximately perpendicular to the top plate 6.

Therefore, when unfolded, the holding frame 18 hangs under its own weight and is rotated between an unused position in which it abuts against the rear of the shelf 10 and a used position in which it extends in a direction substantially perpendicular to the back surface of the top plate when folded.

Here, if the length of the leg piece 18a is set so that the height of the holding frame 18 in the unused position is equal to the height of the shelf 10, the holding frame 18 can be used as an extension of the shelf 10, and the shelf 18 can be used as an extension of the shelf 10. You can expand the area.

Further, a folding chair mounting frame 23 is fixed with a through bolt 24 or the like on a bar 22 made of a square pipe that is integrally suspended between the lower portions of the pillars on both sides.

The mounting frame 23 has a channel-shaped cross section that gradually becomes wider as it faces upward, and is suspended horizontally with its open end facing upward.

However, if you want to store and hold folding chairs at the table,
As the table is folded, the stopper piece of the bracket is displaced and supports the holding frame horizontally.

In this state, a folded chair is inserted from above between the back surface of the top plate and the holding frame, and the lower end of the chair is held on the mounting frame.

As a result, the folding chair and the folding table can be put away in a compact combined state when not in use.

Further, when there is no need to store the folding chair, the holding frame can be rotated upward, so that the holding frame can be pushed up and stored within the frame.

Furthermore, although the bracket is provided with a structure that restrains the holding frame when it is located on the back side of the top plate, if the holding frame is not used, the top plate can be stored in the frame regardless of whether it is unfolded or bent.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the unfolded state of a table according to a preferred embodiment of this invention, Fig. 2 is a side view thereof, Fig. 3 is an enlarged view of the main parts showing the folding mechanism, and Fig. 4 is the third Diagram IV-IV
A line sectional view, FIG. 5 is a partially cutaway perspective view of the lever device part,
FIG. 6 is a side view of the folding chair storage section, FIG. 7 is a perspective view of the bracket section, and FIG. 8 is a partial front view of the folding chair holding state. 1 is a leg column, 5 is a top plate support frame, 6 is a top plate, l is a stay, 9 is a toggle spring, 10 is a shelf, 13 is a lever device, 1
8 is a holding frame, 19 is a bracket, and 23 is a mounting frame.

Claims (1)

[Claims for Utility Model Registration] (1) A structure in which a top plate and shelves parallel to each other below the top plate are connected to each other so that they are unfolded to a horizontal position and bent from the horizontal position to a hanging position along the pillars. On the folding table,
a top plate support frame whose base end is pivoted to the upper end of the pedestal;
a shelf whose proximal end is pivoted to the pedestal at a downwardly spaced position;
A stay configured to bend or expand from a midway part installed between the pivot part of the iron fence and the top plate support frame, and the stay is biased in that direction near the deployed position and in the middle of folding. The toggle spring that energizes, the above-mentioned top support frame, and the shelf are held in an interlocked state. A folding type (2) characterized in that it is equipped with a lever device that pushes up from the side, and when the top board is folded, the stay can be bent against a toggle spring by operating the lever. Utility model registration claim 1, characterized in that the handle piece is made up of a push-up piece extending from the top and a handle piece, and that the handle piece is also heavier or longer than the push-up piece in relation to the spindle. The folding table described above. (3) A rotation angle regulating means for the lever device is provided on at least one of the lever device and the shelf side plate that comes into contact with the lever device to regulate the bending angle of the stay when the lever is operated. The folding table according to claim 1 of the utility model registration claim, characterized in that the toggle spring force acting on the folding table is released and the table is folded to a neutral position, that is, a top tilted rest position. The folding table according to claim 1, wherein the folding table has a power transmission shaft structure that connects lever devices provided on both sides of the shelf.